There are virtually hundreds of definitions of terrorism and terrorist. There are so many that to be able to define the actions of a single person as terrorism is a very sticky proposal. This isn't political correctness, this is prudence. Over reacting to the actions of a lone shooter's motives could lead to the wrongful persecution of thousands of loyal US citizens in our military ranks. The backlash from this would be infinately worse than the lone gunman's actions, and seed the beginning of further actions within out boarders.

Hasan's actions do meet the definition of Islamic Radicalism and there is tons of evidence he was influenced by and preparing to act upon these beliefs, but there is little to no current evidence he was acting as a part of an organized cell. Without that evidence, it is very difficult to categorize his acts as terrorism.

Hindsight has shown there were lots of indicators Hasan was going to act violently in one way or another before the shootings. There were multiple failings to identify him as a potential threat, and the Army's CI and CID Agents are going to have to figure out why they failed to identify Hasan as a military member turning to Radical Islam beliefs. They are going to have to learn from this tragedy. Unfortunately, this is the nature of counterintelligence and counterterrorism, you only hear about the failures and very rarely see the successes. Success in countering threats results in nothing happening. It's hard to prove success, because nothing happened.

Be very careful cruxifying anyone but Hasan for these acts. Nothing you say or do can be worse than the flagellation the Agents are going through right now or the fear other loyal military Muslims are going through right now.